C++ 生成乘法表程序

示例 1：显示最多 10 的乘法表

#include <iostream>
using namespace std;

int main() {

    int n;

    cout << "Enter a positive integer: ";
    cin >> n;

    // run a loop from 1 to 10
    // print the multiplication table
    for (int i = 1; i <= 10; ++i) {
        cout << n << " * " << i << " = " << n * i << endl;
    }
    
    return 0;
}

输出

Enter a positive integer: 5
5 * 1 = 5
5 * 2 = 10
5 * 3 = 15
5 * 4 = 20
5 * 5 = 25
5 * 6 = 30
5 * 7 = 35
5 * 8 = 40
5 * 9 = 45
5 * 10 = 50

上面的程序仅计算最多 10 的乘法表。

示例 2：显示指定范围内的乘法表

下面的程序是上面程序的修改版，用户需要输入乘法表应该显示的范围。

#include <iostream>
using namespace std;

int main() {

    int n, range;

    cout << "Enter an integer: ";
    cin >> n;

    cout << "Enter range: ";
    cin >> range;
    
    for (int i = 1; i <= range; ++i) {
        cout << n << " * " << i << " = " << n * i << endl;
    }
    
    return 0;
}

输出

Enter an integer: 8
Enter range: 12
8 * 1 = 8
8 * 2 = 16
8 * 3 = 24
8 * 4 = 32
8 * 5 = 40
8 * 6 = 48
8 * 7 = 56
8 * 8 = 64
8 * 9 = 72
8 * 10 = 80
8 * 11 = 88
8 * 12 = 96

另请阅读

• C++ 使用多维数组相乘两个矩阵程序